HD vs OEM Pipes

[az1103]

Call me stupid, but I don't understand the need for HD pipes. Why can't you just drill out the OEM's?

 

And how can you go virtually wide open pipe without completely rejetting?

[flb_78]

Because the HD pipes sound deep and mellow while the venture pipes sound like a mouse fart in a coffee can when they are drilled out.

[pegscraper]

Pretty much all Yamaha mufflers sound like that drilled out, not just the Ventures. Shoot, they sound like that undrilled too, only not as loud. I tried drilling the mufflers on my wife's V Star 1100 for a little sound. Now I think they sound terrible.

[BOO]

Although I Have my HD pipes drilled completely out there is still part of the baffles in there that cause a lot of turbulence of the air flow and In my opinion it has some back pressure. That would also be the reason for them being so quiet.

I'm not sure you would have to re-jet these engines even if you put a straight pipe on it.

Jerry

[az1103]

Prior to the RSV I had a Kawi Nomad . When I installed Cobra pipes for sound I found that the reduced backpressure of the exhaust system caused the bike to run lean and uneven. I ended-up having to significantly rejet. In return I got awsome sound plus a significant boost in response and power.

 

I would think that similarly, installing open , or almost open pipes would require enriching the mixture on the RSV as well.

[GunnyButch]

I put them on mine just for the slash cut style, left them stock no drilling. I preferred the look of them over the OEM.

[BEER30]

I got a set of HD OEM pipes on which I will install tonight or tomorrow night . SaltyDawg gave me a set of stock RSV pipes to get the front cones off of , so my original stock pipe will remain intact and on standby if needed .

SaltyDawg also suggested drilling the front baffle plate first to acquire a more suddle sound before I jump in with both feet for the loud . I first drilled 2 - 1/2 and 4 - 3/16th holes from the front . Going to get stainless steel tips today from freind in muffler shop for the slash cut or turn down , depending what he has in stock or has to order , or get both and make them interchangeabe .

I'm going to play around with these pipes starting for a lower sound rather than loudest .

 

Gene

[MrRadi8]

Because the HD pipes sound deep and mellow while the venture pipes sound like a mouse fart in a coffee can when they are drilled out.

 

Having had a gutted set on my RSV when I bought it and changed to the HD cans, I'd say I completely agree with your assessment.

[brainfart]

drilled out the rear baffles on the stock RSV pipes - after a brief breakfast ride my son commented it sounded like "pissed off weed-eater!" when i took off (with a lot of throttle) from a stop.

 

picked up RK pipes that afternoon. love'em.

[Stoutman]

I put them on mine just for the slash cut style, left them stock no drilling. I preferred the look of them over the OEM.

 

I did the same thing. Nice low mellow sound and they look good as well. Now if I sell the bike I can put the stock pipes with it and they will have no road wear.